Vehicle anti-rollover system

ABSTRACT

A vehicle anti-rollover system including at least one gas generator which discharges a gas flow sideways, to an atmosphere where the vehicle is rolling over under a rollover force of the vehicle, when the gas generator is activated during a vehicle rollover. A predetermined force of the gas flow induces a reactive force applied to the vehicle. The rollover force of the vehicle is directed sideways where the vehicle is rolling over, while the reactive force of the gas flow of the anti-rollover system is directed sideways in an opposite direction. Thus, the reactive force of the gas flow reduces the rollover force and minimizes the risk of a rollover crash or rolling over and serious vehicle occupant&#39;s injuries. In a vehicle unstable or rollover situation to avoid a vehicle rolling over, the system also allows the vehicle occupant to activate the gas generator and to stabilize the vehicle almost instantly.

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] Not Applicable

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

[0002] Not Applicable

REFERENCE TO SEQUENCE LISTINGS, A TABLE, OR A COMPUTER PROGRAM LISTING COMPACT DISC APPENDIX

[0003] Not Applicable

BACKGROUND OF THE INVENTION

[0004] The present invention relates to a vehicle anti-rollover system, in particular to a gas anti-rollover system which directs a flow of gas sideways in a transverse direction, to the side where the vehicle is rolling over, and reduces the rollover force.

[0005] Rollover crashes are complex events that reflect the interaction of driver, road, vehicle, and environmental factors. Most rollover crashes occur when a vehicle runs off the road and is tripped by a ditch, curb, soft soil, or other object causing it to rollover. These crashes are usually caused by driver behavior such as speeding or inattention. These are called single vehicle crashes because the crash did not involve a collision with another vehicle.

[0006] From studies of real-world single-vehicle crashes, NHTSA (National Highway Traffic Safety Administration) has determined that more than 90% of rollovers occur after a driver runs off of the road. This does not refer to vehicles trying to negotiate difficult trails away from public roads. It refers to vehicles rolling over off of the pavement after the driver has lost control of the vehicle. Once the vehicle slides off of the pavement, a ditch, soft soil, curb or other tripping mechanism usually initiates the rollover (Rollover Resistance Ratings Information, NHTSA, 2001).

[0007] Based on Static Stability Factor studies, NHTSA found that taller, narrower vehicles, such as sport utility vehicles (SUVs), are more likely than lower, wider vehicles, such as passenger cars, to trip and roll over once they leave the roadway.

[0008] All types of vehicles roll over in certain conditions. While SUVs have the highest number of rollover crashes, because of the higher numbers of passenger cars on the road, almost half of all rollovers involved passenger cars (Rollover Resistance Ratings Information, NHTSA, 2001).

[0009] When a vehicle goes off rural roads it is likely to overturn when it strikes a ditch or embankment or is tripped by soft soil. Many other rollover crashes occur along freeways with grassy or dirt medians when a driver loses control at highway speeds and the vehicle slides sideways off the road and overturns when the tires dig into the dirt.

[0010] Approximately 214,700 passenger vehicles roll over annually in crashes that are severe enough to require towing (Research Note, NHTSA, 2001).

[0011] Rollovers have a higher fatality rate than other kinds of crashes. While rollovers do not occur as frequently as other types of crashes, when they do occur, the result is often serious injury or death. Rollovers accounted for more than 10,000 fatalities in the United States each year, more than side and rear crashes combined. They also resulted in thousands of serious injuries (Rollover Resistance Ratings Information, National Highway Traffic Safety Administration (NHTSA), 2001).

BRIEF SUMMARY OF THE INVENTION

[0012] This invention is directed to a vehicle anti-rollover system for reducing the rollover force during a vehicle rollover.

[0013] The object of the present invention is to provide a vehicle anti-rollover system which minimizes the risk of a rollover crash and serious vehicle occupant's injuries during a vehicle rollover.

[0014] The vehicle anti-rollover system comprises a sensing means for detecting a vehicle rollover and at least one gas generator or gas source with a double guide device or double nozzle joined or connected to the vehicle.

[0015] The gas generator or gas source adapted to generate a gas and to direct a flow of the gas sideways, in a transverse direction, to an atmosphere where the vehicle is rolling over under a rollover force of the vehicle, when the sensing means for detecting a vehicle rollover detects a vehicle's degree of tilt exceeding a predetermined angle and activates the gas generator or gas source.

[0016] The gas flow can have a predetermined, or an adjustable, or a modulative force or power based on the rollover force severity, and the gas is directed sideways through a double guide device or double nozzle which can be adjustable.

[0017] The gas generator or gas source with its double guide device can be located on the roof or in other locations of the vehicle.

[0018] The gas generator or gas source is designed to generate a gas flow when the vehicle is rolling over.

[0019] During a vehicle rollover or when the vehicle is rolling over, the rollover force of the vehicle is directed sideways where the vehicle is rolling over, while the reaction or reactive force induced by the force of the gas flow is directed sideways in an opposite direction and is applied to the vehicle.

[0020] Thus, the reaction or reactive force of the gas flow reduces the rollover force of the vehicle when the gas generator or gas source is activated by the sensing means for detecting a vehicle rollover.

[0021] The entire process of a gas generation, a direction of a gas flow sideways, and a stop of the gas generation takes place in a fraction of a second.

[0022] The objects and advantages of the vehicle anti-rollover system of the present invention, during a vehicle rollover, are:

[0023] (a) to provide an anti-rollover system which reduces the rollover force;

[0024] (b) to provide an anti-rollover system which minimizes the risk of a rollover crash;

[0025] (c) to provide an anti-rollover system which augments a vehicle ability to protect the occupants; and

[0026] (d) to provide an anti-rollover system which reduces the occupant's risk of being killed or seriously injured in a rollover crash.

[0027] In next embodiment of the present invention, the vehicle anti-rollover system comprises means for activating the gas generator or gas source by the vehicle occupant in case of emergency to prevent the vehicle rolling over. In a vehicle unstable or rollover situation to avoid the vehicle rolling over, the vehicle can be stabilized almost instantly by the vehicle occupant when the vehicle occupant switches on or turns on means for activating the gas generator or gas source adapted to generate gas and to direct the flow of the gas sideways, to an atmosphere where the vehicle is rolling over, with a force of the gas flow enabling to reduce the rollover force.

[0028] Additional objects, advantages, and features of the present invention will become apparent from the following detailed description, taken together with the accompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

[0029] The present invention, both as to its structure and manner of operation, may best be understood by referring to the following detailed description, taken in accordance with the accompanying drawings in which:

[0030]FIG. 1 is a front view of a vehicle with a gas generator located on the roof of the vehicle and adapted to direct a gas flow sideways in accordance with the present invention, shown for a usual vehicle situation (in which the anti-rollover system has not been activated) in continuous lines and for vehicle rollover situation (in which the anti-rollover system is activated) in phantom lines;

[0031]FIG. 2 is a front view of the vehicle of FIG. 1 with the anti-rollover system activated and with arrows showing the direction of the gas flow, of the rollover force, and of the reactive force during a vehicle left rollover;

[0032]FIG. 3 is a front view of the vehicle of FIG. 1 with the anti-rollover system activated and with arrows showing the direction of the gas flow, of the rollover force, and of the reactive force during a vehicle right rollover;

[0033]FIG. 4 is an enlarged front view of the gas generator with its double guide device or double nozzle of FIG. 1, shown for a usual condition in continuous lines and for activated condition in phantom lines; and

[0034]FIG. 5 is a side view of the gas generator with its double guide device or double nozzle of FIG. 4, shown for a usual condition in continuous lines and for activated condition in phantom lines.

DETAILED DESCRIPTION OF THE INVENTION

[0035] Referring first to FIG. 1 there is shown a front view of a vehicle 16 with an anti-rollover system 10 of the present invention for reducing the rollover force during a vehicle rollover or when the vehicle is rolling over, shown for a usual vehicle situation (in which the anti-rollover system 10 has not been activated) in continuous lines and for vehicle rollover situation (in which the anti-rollover system 10 is activated) in phantom lines.

[0036] Referring next to FIGS. 2 and 3 there is shown a front view of the vehicle 16 with the anti-rollover system 10 activated and with arrows showing the directions of the gas flows 32 and 34, of the rollover forces 36 and 38, and of the reactive forces 40 and 42 during the vehicle left and right rollovers accordingly.

[0037] The vehicle anti-rollover system 10 (FIGS. 1, 4, and 5) comprises: sensing means for detecting a left or right rollover of a vehicle (not shown), at least one gas generator or gas source 12 with a double guide device or double nozzle 18 joined or connected to the top or roof 14 of the vehicle 16, covers 20 and 22, and hinges 24 and 26. The gas generator or gas source 12 with its double guide device or double nozzle 18 also can be located in other places (not shown) of the vehicle 16. The double guide device or double nozzle 18 is directed sideways in a transverse direction of the vehicle 16.

[0038] The gas generator or gas source 12 is designed to generate a gas flow 28 or 30 (FIGS. 2 and 3) when the vehicle 16 is rolling over.

[0039] During a vehicle rollover or when the vehicle 16 is rolling over, the vehicle anti-rollover system 10 (FIGS. 1, 2, 3, 4, and 5) of the present invention works in the following way;.

[0040] When sensors (not shown) detect a selected or a predetermined severity rollover and signal the control unit (not shown) to generate gas, the gas generator or gas source 12 being activated instantly generates gas and swings the cover 20 or 22 up on theirs hinges 24 or 26 depending on the side where the vehicle is rolling over. The activated gas generator or gas source 12 directs a flow of the gas 28 or 30 in a sideways direction 32 or 34 where the vehicle 16 is rolling over (FIGS. 1, 2, 3, and 4).

[0041] The rollover force 36 or 38 of the vehicle 16 is directed sideways where the vehicle 16 is rolling over, while the reaction or reactive force 40 or 42 of the gas flow 28 or 30 is directed sideways in an opposite direction (FIGS. 2 and 3).

[0042] Thus, the reaction or reactive force 40 or 42 of the gas flow 28 or 30 reduces the rollover force 36 or 38 (FIGS. 2 and 3) which minimizes or reduces the risk of a rollover crash or rolling over and serious vehicle occupant's injuries.

[0043] The gas flow 28 or 30 can have a predetermined, or an adjustable, or a modulative force or power based on the rollover force severity, and the gas is directed sideways through a double guide device or double nozzle 18 (FIGS. 1, 4, and 5) which can be adjustable.

[0044] In next embodiment of the present invention, the vehicle anti-rollover system comprises means (not shown) for activating the gas generator or gas source 12 by the vehicle occupant in case of emergency to prevent the rolling over of the vehicle 16. In a vehicle unstable or rollover situation to avoid the vehicle rolling over, the vehicle 16 can be stabilized almost instantly by the vehicle occupant when the vehicle occupant switches on or turns on means for activating the gas generator or gas source adapted to generate gas and to direct a flow 28 or 30 of the gas sideways, to an atmosphere where the vehicle 16 is rolling over, with a force of the gas flow 28 or 30 enabling to reduce the rollover force 36 or 38 (FIGS. 1, 2 and 3).

[0045] The entire process of a gas generation, a direction of a gas flow sideways, and a stop of the gas generation takes place in a fraction of a second.

[0046] In comparison with current safety systems in existing and new vehicles which cannot provide complete occupant protection in severe rollover crashes which can cause serious occupant injuries, including fatal injuries—even when seat belts are properly worn and the air bags deploy, the present invention of the vehicle anti-rollover system will allow to protect a great many of occupants from receiving serious or fatal injuries.

[0047] While there has been shown and described preferred embodiment of the vehicle anti-rollover system of this invention, it is understood that various changes and modifications may be made by those skilled in the art without departing from the invention. The invention is defined in the following claims. 

I claim:
 1. A vehicle anti-rollover system comprising: at least one gas generator adapted to direct a gas flow sideways, to an atmosphere where said vehicle is rolling over under a rollover force of said vehicle, when a vehicle's degree of tilt exceeds a predetermined angle and activates said gas generator, said gas flow is adapted to induce, in response to a predetermined force of said gas flow, a reactive force applied to said vehicle and oppositely directed to said rollover force of said vehicle, thereby reducing said rollover force of said vehicle, whereby said reduced rollover force minimizes the risk of a rollover crash and serious vehicle occupant's injuries.
 2. The vehicle anti-rollover system of claim 1 wherein: said gas generator includes at least one double guide device for directing said gas flow sideways.
 3. The vehicle anti-rollover system of claim 2 wherein: said double guide device is adjustable.
 4. The vehicle anti-rollover system of claim 1 further including: means for activating said gas generator by said vehicle occupant in case of emergency.
 5. A vehicle anti-rollover system comprising: at least one gas generator adapted to discharge a gas flow sideways, to an atmosphere of a lateral side where said vehicle is rolling over under a rollover force of said vehicle, when said gas generator is activated during a vehicle rollover, said discharged gas flow is adapted to induce, in response to a force of said gas flow, a reaction force which is applied to said vehicle and which counteracts said rollover force of said vehicle, thereby reducing said rollover force of said vehicle, whereby said reaction force stabilizes said vehicle and minimizes the risk of a rollover crash and serious vehicle occupant's injuries.
 6. The vehicle anti-rollover system of claim 5 wherein: said gas generator includes at least one double nozzle for directing said gas flow to said lateral sides.
 7. The vehicle anti-rollover system of claim 6 wherein: said double nozzle is adjustable.
 8. The vehicle anti-rollover system of claim 5 further including: means for activating said gas generator by said vehicle occupant during a vehicle rollover.
 9. A vehicle anti-rollover system comprising: at least one gas generator adapted to shoot out a gas flow sideways, to an atmosphere where said vehicle is rolling over under a rollover force of said vehicle, when said gas generator is activated during a vehicle rollover; said gas flow is adapted to induce, in response to a predetermined force of said gas flow, a reaction force applied to said vehicle and oppositely directed to said rollover force of said vehicle, thereby reducing said rollover force of said vehicle, whereby said reduced rollover force minimizes the risk of a rollover crash and serious vehicle occupant's injuries.
 10. The vehicle anti-rollover system of claim 9 wherein: said gas generator includes at least one double guide device for directing said gas flow in both sideways direction.
 11. The vehicle anti-rollover system of claim 10 wherein: said double guide device is adjustable.
 12. The vehicle anti-rollover system of claim 9 further including: means for activating said gas generator by said vehicle occupant in case of emergency. 